1.4509
INT
X2CrTiNb18
Stainless steel producers have an ongoing development program designed to produce new grades. These new grades are sometimes developed for specific end uses and sometimes to retrofit over an existing grade.
1.4509 round stainless steel covers both of these two areas as it was developed for a specific range of applications in certain industries where it can be used as a replacement for 1.4301 (304) stainless steel. In some respects, its properties and performance in service are actually superior to stainless steel 304, while in others it ranges between 430 and 304. However, in particular, it is also less costly than 304.
Electrical Properties
|
Electrical Resistance
|
0.60 x10 ^ -6 Ω .m
|
|
Hardness HB
|
Max 200
|
|
Magnetic susceptibility
|
-
|
Process Properties
|
Machinability
|
Very good
|
|
Hot Forming
|
good
|
|
Cold Forming
|
low
|
Thermal Recovery
|
Softening Annealing
|
1010-1120 ℃
30 min
|
|
Melting point
|
1505℃
|
The 1.4509 round stainless steel grade also corresponds to the following designations:
Type 441
UNS 43940 / S43932
Uginox F18TNb
Chemical Composition
| Grade |
C |
Cr |
Cu |
P |
Mn |
S |
Nb |
Ti |
Si |
1.4509
|
0.03 max |
18.5 max
|
5.0 max
|
0.04 max
|
1.0 max |
0.025 max |
3xC max |
0.60 max |
1.0
|
Physical Properties
Mainly used in manufacturing of exhaust and catalyst
Mechanical Properties
|
Density
g/cm3
|
Specific heat capacity
J/kg K
|
Thermal conductivity
W/m K
|
Modulus of elasticity
Ω mm2/m
|
|
7.9
|
500 |
15 |
0.73
|
|
Hardness HB 30
≤ HB
|
0.2%Yield StrengthR ≥
N/ mm2
|
Tensile strength R N/ mm2
|
Elongation A ≥ %
|
Modulus of elasticity kN/mm2
|
|
215
|
175
|
460-680
|
45/35
|
200
|